/**************************************************************************//**
*   @file   AD5570.c
*   @brief  Implementation of AD5570 Driver for Microblaze processor.
*   @author Istvan Csomortani (istvan.csomortani@analog.com)
*
*******************************************************************************
* Copyright 2011(c) Analog Devices, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
*    this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
*    this list of conditions and the following disclaimer in the documentation
*    and/or other materials provided with the distribution.
*
* 3. Neither the name of Analog Devices, Inc. nor the names of its
*    contributors may be used to endorse or promote products derived from this
*    software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES, INC. “AS IS” AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL ANALOG DEVICES, INC. BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*******************************************************************************
*   SVN Revision: $WCREV$
******************************************************************************/

/*****************************************************************************/
/* Include Files                                                             */
/*****************************************************************************/
#include "AD5570.h"
#include "Communication.h"
#include "Console.h"

/**************************************************************************//**
 * @brief Initialize SPI and Initial Values for AD5570 Board.
 *
 * @param None.
 *
 * @return retValue - Result of the initialization.
 *                    Example: 0 - if initialization was successful;
 *                            -1 - if initialization was unsuccessful.
******************************************************************************/
int AD5570_Init(void)
{
    char status = -1;

    /* Initialize the SPI interface */
    status = SPI_Init(0, 1000000, 0, 0);

    /* Initialize the LDAC GPIO pin */
    AD5570_PD_OUT;
    AD5570_PD_HIGH;
    AD5570_CLR_OUT;
    AD5570_CLR_HIGH;
    AD5570_LDAC_OUT;
    AD5570_LDAC_LOW;

    return status;
}

/***************************************************************************//*
 * @brief Set the shift register of the DAC with the given value
 *
 * @param The value which will be written to the shift register
 *
 * @return None
******************************************************************************/
void AD5570_SetRegister(unsigned short data)
{
    unsigned char buff[2] = { 0,0 };

    buff[1] = data & 0xFF;
    buff[0] = (data & 0xFF00) >> 8;
    SPI_Write(AD5570_SLAVE_ID, buff, 2);
}
